COLLADA: Ton had a concerned mail from COLLADA lead Remi Arnaud, he and Khronos offer their support, they also would love to see Blender to soon get the official Khronos Conformancy Badge! Nathan Letwory is in contact with Remi to check on what can be done together.

Juicyfruit is listed as being on the official Blender 2.5 Collada exporter team, so he might know already. I'm currently working with EmjeR to supply Juicyfruit with a 0AD compatible Blender animation. The future looks good guys

Edit: By the way, have either of you successfully exported an animation from Blender that worked in 0AD?